{"id":252152,"date":"2023-03-01T15:03:17","date_gmt":"2023-03-01T15:03:17","guid":{"rendered":"\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/"},"modified":"2023-03-01T15:03:17","modified_gmt":"2023-03-01T15:03:17","slug":"any-optimal-scheme-for-3d-simulation-vortex-induced-vibration","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/","title":{"rendered":"any optimal scheme for 3D simulation (vortex-induced vibration)?"},"content":{"rendered":"<p>G&#8217;day,<\/p>\n<p>I&#8217;ve tried several different settings to find a optimal scheme for 3D <strong>VIV<\/strong> simulations. Basicly, I&#8217;ll keep using <strong>PISO<\/strong> since it&#8217;s highly recommended for transient flow. (and with <strong>Green-Gauss Node Based<\/strong> gradient). But what about pressure interpolation(<strong>PRESTO!, body force weighted<\/strong>) and under-relaxation factors for pressure and momentum? I tried both pressure interpolation schemes, but didn&#8217;t benefit from them as the pic shows:<\/p>\n<p><em>&#8220;equations converged but mesh motion hasn&#8217;t reached convergence criterion (1e-05).&#8221;<\/em><\/p>\n<p>Does anyone know how to make this kind of simulation stable? Please share with me. Thank you!<\/p>\n<p><span style=\"text-decoration: underline\">Note that my mesh was built well with minimum orthogonal quality of 0.3.<\/span><img decoding=\"async\" src=\"\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/01-03-2023-1677682662-muu.png\" alt=\"\"><\/p>\n","protected":false},"template":"","class_list":["post-252152","topic","type-topic","status-closed","hentry","topic-tag-fluent","topic-tag-fsi-transient-2"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"G&#039;day,I&#039;ve tried several different settings to find a optimal scheme for 3D VIV simulations. Basicly, I&#039;ll keep using PISO since it&#039;s highly recommended for transient flow. (and with Green-Gauss Node Based gradient). But what about pressure interpolation(PRESTO!, body force weighted) and under-relaxation factors for pressure and momentum? I tried both pressure interpolation schemes, but didn&#039;t\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.10\" \/>\n\t\t<meta property=\"og:locale\" content=\"en_US\" \/>\n\t\t<meta property=\"og:site_name\" content=\"Ansys Learning Forum | Ansys Innovation Space\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"any optimal scheme for 3D simulation (vortex-induced vibration)? | Ansys Learning Forum\" \/>\n\t\t<meta property=\"og:description\" content=\"G&#039;day,I&#039;ve tried several different settings to find a optimal scheme for 3D VIV simulations. Basicly, I&#039;ll keep using PISO since it&#039;s highly recommended for transient flow. (and with Green-Gauss Node Based gradient). But what about pressure interpolation(PRESTO!, body force weighted) and under-relaxation factors for pressure and momentum? I tried both pressure interpolation schemes, but didn&#039;t\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/\" \/>\n\t\t<meta property=\"og:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/01-03-2023-1677682662-muu.png\" \/>\n\t\t<meta property=\"og:image:secure_url\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/01-03-2023-1677682662-muu.png\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2023-03-01T15:03:17+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2023-03-01T15:03:17+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n\t\t<meta name=\"twitter:title\" content=\"any optimal scheme for 3D simulation (vortex-induced vibration)? | Ansys Learning Forum\" \/>\n\t\t<meta name=\"twitter:description\" content=\"G&#039;day,I&#039;ve tried several different settings to find a optimal scheme for 3D VIV simulations. Basicly, I&#039;ll keep using PISO since it&#039;s highly recommended for transient flow. (and with Green-Gauss Node Based gradient). But what about pressure interpolation(PRESTO!, body force weighted) and under-relaxation factors for pressure and momentum? I tried both pressure interpolation schemes, but didn&#039;t\" \/>\n\t\t<meta name=\"twitter:image\" content=\"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/01-03-2023-1677682662-muu.png\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"position\":2,\"name\":\"Topics\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"name\":\"fluent\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"position\":3,\"name\":\"fluent\",\"item\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\\\/#listItem\",\"name\":\"any optimal scheme for 3D simulation (vortex-induced vibration)?\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/topics\\\/#listItem\",\"name\":\"Topics\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\\\/#listItem\",\"position\":4,\"name\":\"any optimal scheme for 3D simulation (vortex-induced vibration)?\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic-tag\\\/fluent\\\/#listItem\",\"name\":\"fluent\"}}]},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\\\/#webpage\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\\\/\",\"name\":\"any optimal scheme for 3D simulation (vortex-induced vibration)? | Ansys Learning Forum\",\"description\":\"G'day,I've tried several different settings to find a optimal scheme for 3D VIV simulations. Basicly, I'll keep using PISO since it's highly recommended for transient flow. (and with Green-Gauss Node Based gradient). But what about pressure interpolation(PRESTO!, body force weighted) and under-relaxation factors for pressure and momentum? I tried both pressure interpolation schemes, but didn't\",\"inLanguage\":\"en-US\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/forums\\\/topic\\\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\\\/#breadcrumblist\"},\"datePublished\":\"2023-03-01T15:03:17+00:00\",\"dateModified\":\"2023-03-01T15:03:17+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#website\",\"url\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/\",\"name\":\"Ansys Learning Forum\",\"description\":\"Ansys Innovation Space\",\"inLanguage\":\"en-US\",\"publisher\":{\"@id\":\"https:\\\/\\\/innovationspace.ansys.com\\\/forum\\\/#organization\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"any optimal scheme for 3D simulation (vortex-induced vibration)? | Ansys Learning Forum","description":"G'day,I've tried several different settings to find a optimal scheme for 3D VIV simulations. Basicly, I'll keep using PISO since it's highly recommended for transient flow. (and with Green-Gauss Node Based gradient). But what about pressure interpolation(PRESTO!, body force weighted) and under-relaxation factors for pressure and momentum? I tried both pressure interpolation schemes, but didn't","canonical_url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"BreadcrumbList","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","position":1,"name":"Home","item":"https:\/\/innovationspace.ansys.com\/forum","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","position":2,"name":"Topics","item":"https:\/\/innovationspace.ansys.com\/forum\/topics\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent\/#listItem","name":"fluent"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent\/#listItem","position":3,"name":"fluent","item":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent\/","nextItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/#listItem","name":"any optimal scheme for 3D simulation (vortex-induced vibration)?"},"previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/topics\/#listItem","name":"Topics"}},{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/#listItem","position":4,"name":"any optimal scheme for 3D simulation (vortex-induced vibration)?","previousItem":{"@type":"ListItem","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent\/#listItem","name":"fluent"}}]},{"@type":"Organization","@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization","name":"Ansys Learning Forum","description":"Ansys Innovation Space","url":"https:\/\/innovationspace.ansys.com\/forum\/"},{"@type":"WebPage","@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/#webpage","url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/","name":"any optimal scheme for 3D simulation (vortex-induced vibration)? | Ansys Learning Forum","description":"G'day,I've tried several different settings to find a optimal scheme for 3D VIV simulations. Basicly, I'll keep using PISO since it's highly recommended for transient flow. (and with Green-Gauss Node Based gradient). But what about pressure interpolation(PRESTO!, body force weighted) and under-relaxation factors for pressure and momentum? I tried both pressure interpolation schemes, but didn't","inLanguage":"en-US","isPartOf":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#website"},"breadcrumb":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/#breadcrumblist"},"datePublished":"2023-03-01T15:03:17+00:00","dateModified":"2023-03-01T15:03:17+00:00"},{"@type":"WebSite","@id":"https:\/\/innovationspace.ansys.com\/forum\/#website","url":"https:\/\/innovationspace.ansys.com\/forum\/","name":"Ansys Learning Forum","description":"Ansys Innovation Space","inLanguage":"en-US","publisher":{"@id":"https:\/\/innovationspace.ansys.com\/forum\/#organization"}}]},"og:locale":"en_US","og:site_name":"Ansys Learning Forum | Ansys Innovation Space","og:type":"article","og:title":"any optimal scheme for 3D simulation (vortex-induced vibration)? | Ansys Learning Forum","og:description":"G'day,I've tried several different settings to find a optimal scheme for 3D VIV simulations. Basicly, I'll keep using PISO since it's highly recommended for transient flow. (and with Green-Gauss Node Based gradient). But what about pressure interpolation(PRESTO!, body force weighted) and under-relaxation factors for pressure and momentum? I tried both pressure interpolation schemes, but didn't","og:url":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/","og:image":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/01-03-2023-1677682662-muu.png","og:image:secure_url":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/01-03-2023-1677682662-muu.png","article:published_time":"2023-03-01T15:03:17+00:00","article:modified_time":"2023-03-01T15:03:17+00:00","twitter:card":"summary_large_image","twitter:title":"any optimal scheme for 3D simulation (vortex-induced vibration)? | Ansys Learning Forum","twitter:description":"G'day,I've tried several different settings to find a optimal scheme for 3D VIV simulations. Basicly, I'll keep using PISO since it's highly recommended for transient flow. (and with Green-Gauss Node Based gradient). But what about pressure interpolation(PRESTO!, body force weighted) and under-relaxation factors for pressure and momentum? I tried both pressure interpolation schemes, but didn't","twitter:image":"https:\/\/innovationspace.ansys.com\/forum\/forum\/wp-content\/uploads\/sites\/2\/2023\/03\/01-03-2023-1677682662-muu.png"},"aioseo_meta_data":{"post_id":"252152","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"content","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":true,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"limit_modified_date":false,"created":"2024-10-28 18:45:28","updated":"2024-10-28 18:45:28","ai":null,"breadcrumb_settings":null,"seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\/topics\/\" title=\"Topics\">Topics<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent\/\" title=\"fluent\">fluent<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\tany optimal scheme for 3D simulation (vortex-induced vibration)?\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/innovationspace.ansys.com\/forum"},{"label":"Topics","link":"https:\/\/innovationspace.ansys.com\/forum\/topics\/"},{"label":"fluent","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic-tag\/fluent\/"},{"label":"any optimal scheme for 3D simulation (vortex-induced vibration)?","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/any-optimal-scheme-for-3d-simulation-vortex-induced-vibration\/"}],"acf":[],"custom_fields":[{"0":{"_bbp_subscription":["273724","13659"],"_bbp_author_ip":["23.56.168.190"]," _bbp_last_reply_id":["0"]," _bbp_likes_count":["0"],"_btv_view_count":["636"],"_edit_lock":["1679912133:204221"],"_bbp_likes_count":["1"],"_bbp_topic_status":["unanswered"],"_bbp_status":["publish"],"_bbp_topic_id":["252152"],"_bbp_forum_id":["27792"],"_bbp_engagement":["13659","273724"],"_bbp_voice_count":["2"],"_bbp_reply_count":["1"],"_bbp_last_reply_id":["279159"],"_bbp_last_active_id":["279159"],"_bbp_last_active_time":["2023-04-12 20:29:15"]},"test":"f24071085gs-ncku-edu-tw"}],"_links":{"self":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/252152","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics"}],"about":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/types\/topic"}],"version-history":[{"count":0,"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/topics\/252152\/revisions"}],"wp:attachment":[{"href":"https:\/\/innovationspace.ansys.com\/forum\/wp-json\/wp\/v2\/media?parent=252152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}